The results obtained during the laboratory testing of the blowers are discussed in this paper. The blowers were tested in the laboratory at speeds between 1700 r/min and 4500 r/min. The results of the tests of the blowers are discussed individually first, then they are compared with each other. Observations were taken for the determination of dynamic head, static head, atmospheric temperature, input voltage and current. The power factor and the efficiency of the motor were assumed. From these observations, the values of air velocity, discharge, dynamic and total pressure at the blower exit, input power to blower, and dimensionless coefficients as flow, pressure and power coefficients were calculated.

Keywords: Laboratory Testing, Blowers, Power Factor, Air Velocity, Input Power.